A FINE NORTH ITALIAN COMBINED WHEEL-LOCK SPANNER AND TURNSCREW, entirely of steel, the stem chiselled in the round as a scaled sea-monster, its tapering tail bifurcated and intertwined to form a pierced spatulate end incorporating the turnscrew, the head made for spindles of differing sizes and chiselled and pierced with a central mask on each side framed by addorsed overlapping leaves, and with roped collar carrying a swivel for suspension, mid-17th Century, probably Brescian